/*
 * Copyright 2018 StreamSets Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.streamsets.pipeline.api;

/**
 * Field operator is used by {@FieldProcessor} to manipulate fields while avoiding object creation for performance.
 */
public interface FieldOperator extends RecordField {
  /**
   * Replace the field the cursor is currently pointing to with the replacement.
   *
   * @param replacement Replacement field.
   */
  public void replace(Field replacement);

  /**
   * Drop the field that the cursor is pointing to.
   */
  public void drop();

}